Bug#658701: mdadm: should send email if mismatches are reported by a check

[Michael Tokarev]

Neil, re http://bugs.debian.org/658701 , how do you think,
is it okay if mdadm --monitor will send email in case check
found mismatches, the same way it sends email about other
more critical errors?

I think Russell has a good point here, but there's one more
source of mismatches we have in kernel - some "sporadic"
mismatches in raid1 and raid10, especially when these are
used as swap space...

In Debian we've several bugreports already requesting more
attention to mismatch_cnt, see:

 http://bugs.debian.org/658701 (this one)
 http://bugs.debian.org/599821
 http://bugs.debian.org/588516

Thank you!

/mjt